There be 是“有”的意思.It be 是“它是/那是”的意思.
所以答案是There were three rooms in the building:There was a classroom,there was a toilet and there was a teacher's room
There be 是“有”的意思.It be 是“它是/那是”的意思.
所以答案是There were three rooms in the building:There was a classroom,there was a toilet and there was a teacher's room